Lubricating device



July 7,1936. H. RQTEARV 2,045,413

. LUBRICATING DEVICE Filed Nov. 21, 1932 INVENTOR BY @Zm A ORNEY Fatented July 7 E336 z dtidl are LUBRICATING DEVEEE Harry R. Tear, South Bend, Ind, assignor to lihe Lubrication @orporation, South Bend, Ind a corporation oi Delaware Application November 21, 1932, Serial No. 6435M 5 Claims. (cl. ice-res) This invention relates-to improvements in lubricating devices and more particularly to lubricant receiving fittings.

Heretofore lubricant receiving nipples or fit-' tings have been provided having a valve incorporated therein normally held against its seat by acompression spring, which, because of the relatively small space within which it is confined must necessarily be constructed of comparatively light spring stock and therefore subject to slight unintentional distortion in use. This distortion of the spring has often resulted in the spring slipping ofi from its retaining member or pin during valve operation thus rendering the valve inoperative.

An object of the invention is to provide a lubricant receiving fitting incorporating a valve spring core of the spring so as to prevent the spring from slipping laterally from the retainer.

, Another object is to provide a lubricant receiving fitting having a valve spring retainer member which functions to automatically center the valve spring within the space provided therefor.

Other objects, the advantages, and uses of the invention, will be, or should become apparent after reading the following description and claims and after consideration oi th accompanying drawing forming a part of this specification, in

which:

Fig. 1 is a sectional view of a lubricant receiving fitting embodying a valve spring retainer constructed in accordance with the invention; and

Fig. 2 is a bottom plan view of the lubricant fitting of Fig. i.

In general, the embodiment of the invention selected for illustration herein comprises a lubricant receiving fitting having a shank A and a head B, a passageway C extending through the head and shank. a-valve D for closing the passageway C, a spring E located within an enlarged portion of the passageway C, and a spring retainer F bridging the outer end of the shank and welded at its opposite ends thereto.

With particular reference to Figs. 1 and 2, the shank A and head B of the fitting may be constructed of a single screw machined part provided with screw threads 2 upon the external walls of the shank for securing the fitting within the lubricant bore or duct of a hearing or other part with which the fitting is to be associated. The passageway C may have a constricted poztion 3 at its inlet end of. substantially the diameter of the outer portion 3 of the valve D so that the accidental admission of' extraneous matter into the fitting may be avoided. The inner end of the valve member B'may be provided with a diametrically enlarged portion'b formed with a substantially conical valve seat engaging surface 8 arranged to bear upon a similarly formed surface 7 formed at the juncture of the major portion of the passageway C and the diametrically enlarged portion dthereof. The rearward end of the valve member D has a short cylindrical stud 9 formed thereon about which the outer end of the spring E may be located so as to prevent lateral shifting of the'spling relative to the valve member and to the portion 8 of the passageway 0.,

The fitting thus far described comprises that type of fitting commonly employed for automotive and machine lubricating purposes. The present invention relates to the formation and aflixing of the spring retainer F to the fitting shank A and in its combination with the fitting valve spring E'the spring retainer may be formedof steel wire stock bent at substantially 90 at its mid-point as shown at H and located diametrically across the outer end i2 of the fitting shank and aifixed thereto at its opposite ends by electric welding, as indicated at 13. The position of the retainer F when so afiixed to the shank A is such as to cause the bent mid-portion M to extend toward the valve D so that the lower end of the spring E may rest thereupon thus prohibiting the lateral shifting of that end of the spring, particularly when compressed as when the valve is opened, thereby eliminating the possibility of dislodgment of the spring from the retainer and consequent inoperativeness of the valve D. A further function of the bent portion H of the retainer F is to centrally locate the rearward end of the spring with respect to the enlarged portion it of the passageway C so as to apply a direct axial thrust to the valve member D to encourage uniform seating of the valve upon the valve seat I A lubricant receiving fitting constructed as de scribed permits the use of a valve spring E of relatively small diameter'with respect to the diameter of-the portion 8 of the passageway C so as to assure a free how of lubricant through.

the passageway as when the valve D is open and the coils of the spring compressed agalnstjone another. -This feature is attained, as set forth,

- by the bent formation of the spring retainer F whichserves to hold the spring against lateral and various changes may be made therein with out departing from the spirit invention.

I claim;

1. In a lubricant receiving fitting having a passageway therethrough, a valve in said passageway, a coiled compression spring arranged to bear, at one end, upon said valve, and an elongated wirelilre retainer member, providing a support for the other end of said spring, extending diametrically across said pawageway and and scope of the secured at its ends to said fitting and having its mid-portion formed to enter within the adjacent end of said spring.

2. In a lubricant receiving fitting having a passageway therethrough, a valve in said passageway, a coiled compression spring arranged to bear, at one end, upon said valve member, and an elongated retainer member, providing a support for the other end of said spring, extending diametrically across said passageway and having its mid-portion formed with a v-shaped bend adapted to enter within the adjacent end or said spring.

3. A lubricant receiving fitting comprising a body having a shank for securing the fitting upon a hearing or other part to be lubricated, said body and shank having a passageway extending longitudinally therethrough, a valve located in 5 said passageway, a compression spring, in axiai alignment with said valve, in said passageway,

, the diameter of said spring being appreciably less than the diameter of said passageway, and a wirelike retainer member for supporting said 1 spring secured at opposite ends to said shank and extending diametrically acrom the mouth of said passageway, said retainer having a portion thereof formed to engage with, and locate said spring centrally within said passageway. 15

4. In a lubricant receiving fitting having a passageway therethrough, a valve in said passageway, a compression spring in said pawageway for operating said valve, and a short length oi steel wire fixed across the end of said fitting 20 and having its mid-portion extending centrally within said passageway for supporting and locating one end of said spring.

5. In a'luhricant receiving fitting having a passageway therethrough, a valve in' said pas- 25 sageway, a compression spring in said passageway for operating said valve, and a short length of steel wire disposed across the end of said fitting and having its mid-portion formed with a V-shaped bend extending centrally within said passageway for supporting and locating one end of said spring, said wire being secured at its outer ends to said end of said fitting.

HARRY a. ress. c 35. 

